lkml.org 
[lkml]   [2006]   [Aug]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: cpufreq stops working after a while
On Fri, 11 Aug 2006 14:25:26 -0400
Mark Lord <lkml@rtr.ca> wrote:

> One of my notebooks (Dell Latitude X1) has a 1.1GHz Pentium-M ULV processor.
> This chip can change CPU speeds from 600 -> 800 -> 1100 Mhz.
>
> I use speedstep-centrino with it, and after boot all is usually okay.
> But after a few hours of operation, it stops shifting to the highest frequency
> even under continuous 100% load (or not). Eventually it gets stuck at 600Mhz
> and stays there until I reboot.
>
> Sometimes rebooting doesn't even restore it.
>
> /sys/devices/system/cpu/cpu0/cpufreq is all very normal looking,
> showing the available frequencies and other info. All of the attribs
> there look fine, except for "scaling_max_freq", which is what seems
> to gradually get set smaller. For instance, right now it is set to 800000,
> and it won't let me change it (echo 11000000 > scaling_max_freq has no effect.
>
> WHY?

cpufreq seems to have relatively frequent problems.

> And how can I fix it?

You could start by telling us which kernel versions are affected ;)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-08-11 20:49    [W:0.187 / U:0.220 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site